Alert archive / Tennessee / Flash Flood Warnings in 1989
Flash Flood Warning 20, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Jul 5, 1989, 8:06 PM EDT for Hamilton County, Tennessee. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 5, 1989, 8:06 PM EDT (00:06 UTC)
- Expired
- Jul 5, 1989, 10:15 PM EDT
- In force
- 2 hr
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Hamilton County, TN
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 0.1 hours before the alert went out and 167 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 32 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1052 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KCHA 060008
FFWCHA
TNC065-060215-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
806 PM EDT WED JUL 5 1989
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1015 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST TENNESSEE
...WESTERN HAMILTON
AT 8PM EDT WEATHER RADAR INDICATED A SLOW MOVING THUNDERSTORM
MOVING SLOWLY NORTHWARD THROUGH WESTERN CHATTANOOGA AND INTO THE
REDBANK AREA. THE THUNDERSTORM IS PRODUCING VERY HEAVY
RAINFALL AND THAT ALONG WITH ITS SLOW MOVEMENT WILL PRODUCE
FLASH FLOODING IN SOME AREAS AS IT CONTINUES ITS MOVEMENT
UP THE WESTERN SECTIONS OF HAMILTON COUNTYY.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 5, 2:33 PM EDT, 5 hours 33 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 225 PM EDT WED JUL 5 1989 A LINE OF THUNDERSTORMS EXTENDS ACROSS NORTHEAST GEORGIA FROM SOUTH OF DAHLONEGA TO COMMERCE...CRAWFORDVILLE AND SWAINSBORO. THIS LINE OF STORMS CONTINUES TO MOVE NORTH 25 MPH ACCOMPANIED BY HEAVY RAIN...GUSTY WINDS AND FREQUENT LIGHTNING. AT THE PRESENT SPEED OF MOVENENT THE LINE SHOULD EXTEND FROM CLEVELAND TO TOCCOA AND ALONG THE SAVANNAH RIVER BY 325 PM EDT. ELSEWHERE...SHOWERS AND PATCHES OF LIGHT RAIN WERE SCATTERED OVER NORTHWEST AND CENTRAL GEORGIA. MOVEMENT WAS TO THE NORTH 25 MPH.
Special weather statement, Jul 5, 3:33 PM EDT, 4 hours 33 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 325 PM EDT WED JUL 5 1989 A LINE OF THUNDERSTORMS EXTENDS ACROSS NORTHEAST GEORGIA FROM NEAR CLEVELAND TO CORNELIA...ELBERTON AND WAYNESBORO. THIS LINE OF THUNDERSTORMS WAS MOVING TO THE NORTHEAST AND SHOULD MOVE ACROSS THE SAVANNAH RIVER INTO WESTERN SOUTH CAROLINA DURING THE NEXT HOUR. HEAVY RAIN...GUSTY WINDS AND FREQUENT LIGHTNING CAN BE EXPECTED WITH THIS LINE O6F STORMS. ELSEWHERE...SHOWERS AND ISOLATED THUNDERSTORMS WERE OVER NORTH AND CENTRAL GEORGIA. MOVEMENT WAS TO THE NORTH 25 MPH.
Special weather statement, Jul 5, 4:40 PM EDT, 3 hours 26 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATHENS GA 435 PM EDT WED JUL 5 1989 A LINE OF THUNDERSTORMS EXTENDS ACROSS NORTHEAST GEORGIA FROM NEAR DAHLONEGA TO TOCCOA AND DOWN THE SAVANNAH RIVER TO AUGUSTA AND STATESBORO GEORGIA. A FEW OF THE THUNDERSTORMS HAD HEAVY RAINFALL RATES. THIS LINE OF THUNDERSTORMS WILL MOVE INTO SOUTH CAROLINA DURING THE NEXT HOUR AND WILL BE LOCATED FROM NEAR WALHALLA TO GREENWOOD...SALUDA...AIKEN AND ALLENDALE AT 530 EDT. HEAVY RAIN GUSTY WINDS AND FREQUENT LIGHTNING CAN BE EXPECTED WITH THIS LINE LINE OF STORMS. LINE MOVEMENT WAS NORTHEAST 25 MILES AN HOUR. ELSEWHERE...SHOWERS AND ISOLATED THUNDERSTORMS WERE OVER NORTH AND CENTRAL GEmORGIA. MOVEMENT OF CELLS NORTH 25 MILES AN HOUR.
Nearby
Flash Flood Warnings in Tennessee, 1989Every flash flood warning in 1989
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.